<?php
declare( strict_types=1 );

namespace Automattic\WooCommerce\Internal\Admin\Settings;

use Automattic\WooCommerce\Internal\Admin\Settings\PaymentsProviders\WooPayments\WooPaymentsService;
use Automattic\WooCommerce\Internal\Logging\SafeGlobalFunctionProxy;
use Throwable;
use WC_Gateway_BACS;
use WC_Gateway_Cheque;
use WC_Gateway_COD;

defined( 'ABSPATH' ) || exit;
/**
 * Payments settings controller class.
 *
 * Use this class for hooks and actions related to the Payments settings page.
 *
 * @internal
 */
class PaymentsController {

	const TRANSIENT_HAS_PROVIDERS_WITH_INCENTIVE_KEY = 'woocommerce_admin_settings_payments_has_providers_with_incentive';

	/**
	 * The payment service.
	 *
	 * @var Payments
	 */
	private Payments $payments;

	/**
	 * Register hooks.
	 */
	public function register() {
		add_action( 'admin_menu', array( $this, 'add_menu' ) );
		add_filter( 'admin_body_class', array( $this, 'add_body_classes' ), 20 );
		add_filter( 'woocommerce_admin_shared_settings', array( $this, 'preload_settings' ) );
		add_filter( 'woocommerce_admin_allowed_promo_notes', array( $this, 'add_allowed_promo_notes' ) );
		add_filter( 'woocommerce_get_sections_checkout', array( $this, 'handle_sections' ), 20 );
		add_action( 'woocommerce_admin_payments_extension_suggestion_incentive_dismissed', array( $this, 'handle_incentive_dismissed' ) );
	}

	/**
	 * Initialize the class instance.
	 *
	 * @param Payments $payments The payments service.
	 *
	 * @internal
	 */
	final public function init( Payments $payments ): void {
		$this->payments = $payments;
	}

	/**
	 * Adds the Payments top-level menu item.
	 */
	public function add_menu() {
		global $menu;

		// When the WooPayments account is onboarded, WooPayments will own the Payments menu item since it is the native Woo payments solution.
		if ( $this->is_woopayments_account_onboarded() ) {
			return;
		} else {
			// Otherwise, remove the Payments menu item linking to the Connect page to avoid Payments menu item duplication.
			remove_menu_page( 'wc-admin&path=/payments/connect' );
		}

		$menu_title = esc_html__( 'Payments', 'woocommerce' );
		$menu_icon  = '';
		// Link to the Payments settings page.
		$menu_path = 'admin.php?page=wc-settings&tab=checkout&from=' . Payments::FROM_PAYMENTS_MENU_ITEM;

		add_menu_page(
			$menu_title,
			$menu_title,
			'manage_woocommerce', // Capability required to see the menu item.
			$menu_path,
			null,
			$menu_icon,
			56, // Position after WooCommerce Product menu item.
		);

		// If there are providers with an active incentive, add a notice badge to the Payments menu item.
		if ( $this->store_has_providers_with_incentive() ) {
			$badge = ' <span class="wcpay-menu-badge awaiting-mod count-1"><span class="plugin-count">1</span></span>';
			foreach ( $menu as $index => $menu_item ) {
				// Only add the badge markup if not already present, and the menu item is the Payments menu item.
				if ( 0 === strpos( $menu_item[0], $menu_title )
					&& $menu_path === $menu_item[2]
					&& false === strpos( $menu_item[0], $badge ) ) {

					$menu[ $index ][0] .= $badge; // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited

					// One menu item with a badge is more than enough.
					break;
				}
			}
		}
	}

	/**
	 * Adds body classes when in the Payments Settings admin area.
	 *
	 * @param string $classes The existing body classes for the admin area.
	 *
	 * @return string The modified body classes for the admin area.
	 */
	public function add_body_classes( $classes = '' ) {
		global $current_tab;

		// Bail if the type is invalid.
		if ( ! is_string( $classes ) ) {
			return $classes;
		}

		if ( 'checkout' === $current_tab && ! str_contains( 'woocommerce-settings-payments-tab', $classes ) ) {
			$classes = "$classes woocommerce-settings-payments-tab";
		}

		return $classes;
	}

	/**
	 * Preload settings to make them available to the Payments settings page frontend logic.
	 *
	 * Added keys will be available in the window.wcSettings.admin object.
	 *
	 * @param array $settings The settings array.
	 *
	 * @return array Settings array with additional settings added.
	 */
	public function preload_settings( $settings = array() ) {
		// We only preload settings in the WP admin.
		if ( ! is_admin() ) {
			return $settings;
		}

		// Reset the received value if the type is invalid.
		if ( ! is_array( $settings ) ) {
			$settings = array();
		}

		// Add the business location country to the settings.
		if ( ! isset( $settings[ Payments::PAYMENTS_NOX_PROFILE_KEY ] ) ) {
			$settings[ Payments::PAYMENTS_NOX_PROFILE_KEY ] = array();
		}
		$settings[ Payments::PAYMENTS_NOX_PROFILE_KEY ]['business_country_code'] = $this->payments->get_country();

		return $settings;
	}

	/**
	 * Adds promo note IDs to the list of allowed ones.
	 *
	 * @param array $promo_notes Allowed promo note IDs.
	 *
	 * @return array The updated list of allowed promo note IDs.
	 */
	public function add_allowed_promo_notes( $promo_notes = array() ): array {
		// Reset the value if the type is invalid.
		if ( ! is_array( $promo_notes ) ) {
			$promo_notes = array();
		}

		try {
			$providers = $this->payments->get_payment_providers( $this->payments->get_country(), false );
		} catch ( Throwable $e ) {
			// Catch everything since we don't want to break all the WP admin pages.
			// Log so we can investigate.
			SafeGlobalFunctionProxy::wc_get_logger()->error(
				'Failed to get payment providers: ' . $e->getMessage(),
				array(
					'source' => 'settings-payments',
				)
			);

			return $promo_notes;
		}

		// Add all incentive promo IDs to the allowed promo notes list.
		foreach ( $providers as $provider ) {
			if ( ! empty( $provider['_incentive']['promo_id'] ) ) {
				$promo_notes[] = $provider['_incentive']['promo_id'];
			}
		}

		return $promo_notes;
	}

	/**
	 * Alter the Payments tab sections under certain conditions.
	 *
	 * @param array $sections The payments/checkout tab sections.
	 *
	 * @return array The filtered sections.
	 */
	public function handle_sections( $sections = array() ): array {
		global $current_section;

		// Reset the value if the type is invalid.
		if ( ! is_array( $sections ) ) {
			$sections = array();
		}

		// Bail if the current section global is empty or of the wrong type.
		if ( empty( $current_section ) || ! is_string( $current_section ) ) {
			return $sections;
		}

		// For WooPayments and offline payment methods settings pages, we don't want any section navigation.
		if ( in_array( $current_section, array( WooPaymentsService::GATEWAY_ID, WC_Gateway_BACS::ID, WC_Gateway_Cheque::ID, WC_Gateway_COD::ID ), true ) ) {
			return array();
		}

		return $sections;
	}

	/**
	 * Handle the payments extension suggestion incentive dismissed event.
	 *
	 * @return void
	 */
	public function handle_incentive_dismissed(): void {
		// Clear the transient to force a new check for providers with an incentive.
		delete_transient( self::TRANSIENT_HAS_PROVIDERS_WITH_INCENTIVE_KEY );
	}

	/**
	 * Check if the store has any enabled gateways (including offline payment methods).
	 *
	 * @return bool True if the store has any enabled gateways, false otherwise.
	 */
	private function store_has_enabled_gateways(): bool {
		$gateways         = WC()->payment_gateways->get_available_payment_gateways();
		$enabled_gateways = array_filter(
			$gateways,
			function ( $gateway ) {
				return 'yes' === $gateway->enabled;
			}
		);

		return ! empty( $enabled_gateways );
	}

	/**
	 * Check if the store has any payment providers that have an active incentive.
	 *
	 * @return bool True if the store has providers with an active incentive.
	 */
	private function store_has_providers_with_incentive(): bool {
		// First, try to use the transient value.
		$transient = get_transient( self::TRANSIENT_HAS_PROVIDERS_WITH_INCENTIVE_KEY );
		if ( false !== $transient ) {
			return filter_var( $transient, FILTER_VALIDATE_BOOLEAN );
		}

		try {
			$providers = $this->payments->get_payment_providers( $this->payments->get_country(), false );
		} catch ( Throwable $e ) {
			// Catch everything since we don't want to break all the WP admin pages.
			// Log so we can investigate.
			SafeGlobalFunctionProxy::wc_get_logger()->error(
				'Failed to get payment providers: ' . $e->getMessage(),
				array(
					'source' => 'settings-payments',
				)
			);

			// In case of an error, default to false.
			// Set the transient to avoid repeated errors.
			set_transient( self::TRANSIENT_HAS_PROVIDERS_WITH_INCENTIVE_KEY, 'no', HOUR_IN_SECONDS );
			return false;
		}

		$has_providers_with_incentive = false;
		// Go through the providers and check if any of them have a "prominently" visible incentive (i.e., modal or banner).
		foreach ( $providers as $provider ) {
			if ( empty( $provider['_incentive'] ) ) {
				continue;
			}

			$dismissals = $provider['_incentive']['_dismissals'] ?? array();

			// If there are no dismissals at all, the incentive is prominently visible.
			if ( empty( $dismissals ) ) {
				$has_providers_with_incentive = true;
				break;
			}

			// First, we check to see if the incentive was dismissed in the banner context.
			// The banner context has the lowest priority, so if it was dismissed, we don't need to check the modal context.
			// If the banner is dismissed, there is no prominent incentive.
			$is_dismissed_banner = ! empty(
				array_filter(
					$dismissals,
					function ( $dismissal ) {
						return isset( $dismissal['context'] ) && 'wc_settings_payments__banner' === $dismissal['context'];
					}
				)
			);
			if ( $is_dismissed_banner ) {
				continue;
			}

			// In case an incentive uses the modal surface also (like the WooPayments Switch incentive),
			// we rely on the fact that the modal falls back to the banner, once dismissed, after 30 days.
			// @see here's its frontend "brother" in client/admin/client/settings-payments/settings-payments-main.tsx.
			$is_dismissed_modal = ! empty(
				array_filter(
					$dismissals,
					function ( $dismissal ) {
						return isset( $dismissal['context'] ) && 'wc_settings_payments__modal' === $dismissal['context'];
					}
				)
			);
			// If there are no modal dismissals, the incentive is still visible.
			if ( ! $is_dismissed_modal ) {
				$has_providers_with_incentive = true;
				break;
			}

			$is_dismissed_modal_more_than_30_days_ago = ! empty(
				array_filter(
					$dismissals,
					function ( $dismissal ) {
						return isset( $dismissal['context'], $dismissal['timestamp'] ) &&
							'wc_settings_payments__modal' === $dismissal['context'] &&
							$dismissal['timestamp'] < strtotime( '-30 days' );
					}
				)
			);
			// If the modal was dismissed less than 30 days ago, there is no prominent incentive (aka the banner is not shown).
			if ( ! $is_dismissed_modal_more_than_30_days_ago ) {
				continue;
			}

			// The modal was dismissed more than 30 days ago, so the banner is visible.
			$has_providers_with_incentive = true;
			break;
		}

		// Save the value in a transient to avoid unnecessary processing throughout the WP admin.
		// Incentives don't change frequently, so it is safe to cache the value for 1 hour.
		set_transient( self::TRANSIENT_HAS_PROVIDERS_WITH_INCENTIVE_KEY, $has_providers_with_incentive ? 'yes' : 'no', HOUR_IN_SECONDS );

		return $has_providers_with_incentive;
	}

	/**
	 * Check if the WooPayments account is onboarded.
	 *
	 * @return boolean
	 */
	private function is_woopayments_account_onboarded(): bool {
		// Sanity check: the WooPayments extension must be active.
		if ( ! class_exists( '\WC_Payments' ) ) {
			return false;
		}

		$account_data = get_option( 'wcpay_account_data', array() );

		// The account ID must be present.
		if ( empty( $account_data['data']['account_id'] ) ) {
			return false;
		}

		// We consider the store to have an onboarded WooPayments account if account data in the WooPayments account cache
		// contains a details_submitted = true entry. This implies that WooPayments is also connected.
		if ( empty( $account_data['data']['details_submitted'] ) ) {
			return false;
		}

		return filter_var( $account_data['data']['details_submitted'], FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE ) ?? false;
	}
}
